Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Recommended Posts

    You can remove these ads by becoming a Contributing Member.

  • 2 weeks later...

GT1 motor = awesome. (except for glued in coolant bungs)

M96 & M97 = 2.7

9A1 = yet to be seen.

I sold my 996TT X50 and bought a 997 Carrera S.... and now I'm debating my decision. The more research I do on these 3.8 M97 motors the more I get freaked out. They're just like the old 2.7 liter engines. Porsche bored out the 2.4 liter motors to make the 2.7 and in doing so the coolant passages got smaller and the motors were prone to overheat and failure... The 3.6 and 3.8 M97 motors are the exact same... larger displacement in same block as 3.4 and now they have coolant issues and are prone to cylinder scars and cylinder liner failures on bank 2. It sucks having a Porsche that you don't feel like you can ring it out without having a potential failure. I'm adding a radiator and changing the thermostat to a cooler unit and running a Tungsten Disulphide Fullerene Nano Particle additive to try and mitigate this problem from happening to me, but if I knew then what I know now I don't think I would have bought a 997.

In my opinion the only Porsche 911's that are worth a **** now days are the Turbo's up to 2010 and all the GT cars. The rest I think have subtle engine design flaws that will lead to eventual failures at some point unless the owners are just very anal about keeping them as cool as possible and not following the Porsche recomended super stupid long maintenance intervals.

You 996TT boys...stick with them. Those motors are awesome. Like the gentleman above, you may end up replacing everything around the motor, but motor failures are very very rare.

I've only had my 997 for about a month and I'm debating selling it already. Love the car and the way it looks and handles but I'm paranoid about the motor now, which makes for a not fun owning experience. Porsche claims this great reliabilty but personally I think it's bunk. I bet if you do a per mileage failure rate the Porsche looks like crap compared to everything else. When you look at the failure rate per year they probably look pretty good as the majority of owners will have maybe 30K miles on a 6 year old car. I would hope in 30,000 miles of use there wouldn't be any major failures but even that's not the case... I know of guys with 20K mile M97 cars with cylinder liner failures. That's garbage! Luckily for one owner I know of, his failed outside of the CPO warranty and Porsche still agreed to pay for 85% of the repair so that's cool but I doubt that happens for the majority of people. The IMS issues and now the cylinder liner issues are both due to Porsche trying to save a buck in production. A car company that has the highest per car profit margin shouldn't be cutting corners on engine design.

Link to post
Share on other sites
  • 3 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.